I submitted a pull request a while back based on the work of Brad
Spencer. I'd like to see if there are any objections to merging it,
Brad has commented on the pull request stating my revisions looked
good to him.

We've been running this in production for a while now and it appears
to have resolved some random issues clients were experiencing. Also,
the current c-ares master branch will never use IPv6 DNS servers on
Windows which this pull also fixes.